Update readme.source.md

Author: SimonCropp

readme.source.md

@@ -400,6 +400,7 @@ information sources and warn about particular gotchas:
 
 ### Videos
 
+* [The Only Type of Testing You Need - Nick Chapsas (12 Nov 2024)](https://www.youtube.com/watch?v=JG4zt9CnIl4)
 * [Introduction to Snapshot testing and using Verify.Xunit - Betatalks (11 Oct 2023)](https://www.youtube.com/watch?v=RVmz3FZFIBU)
 * [The Way to Test Legacy Code in C# - Gui Ferreira (19 Sep 2023)](https://www.youtube.com/watch?v=UC-AUnuTh0I)
 * [Snapshot Testing in .NET with Verify - Dan Clarke (21 Jul 2022)](https://www.youtube.com/watch?v=wA7oJDyvn4c&t=1s)